Why swallow standing on the wire is not afraid of high voltage current
YJV said cross-linked polyethylene insulated PVC sheathed power cable behind the 4-core section is 25mm21 core cross-section is 16 copper core cable if it is aluminum core is YJLVL said aluminum core
As the bird's feet are his step on the same high-voltage wire, the distance between the birds and the feet determine the voltage. The distance between the feet of the birds is very small, so the voltage is very small, the equivalent of 0. Do not let the birds electric shock.
Power line cross-sectional area of 10 square and below, the equipment room from the shorter end of the room can be considered to wear BV line, distance or consider the cable. Like the power box to the device control box is generally cable, control box to the end of this equipment can be referred to the above-mentioned approach. According to the actual situation of your site to set.
In the construction of electrical power equipment, dark pipe is generally threading, dark pipe is mostly equipment power supply or independent power supply, there are mixed construction, that is, cable cable cable and then wear pipe, which is long-distance equipment power or independent Power supply, the majority of cable laying cable bridge
